Mad at boss rant

I have had my hours cut and lost full-time insurance. The part-time insurance does not cover mental health related issues and has no prescription plan. I made an appointment with my substitute T (current T is on medical leave) and ask to write down the appoinment for time off. I have a job that schedules you when they need you and has no predictable days off. He said that he had put a stop to that nonsense and no one is allowed to ask off. I stared at him with my jaw hanging open. Then he said that he was kidding.
We went to his office and I reminded him that school starts at the end of the month. I ask him which days does he need me least. He stated that he just wanted me to be available on Fridays, Saturdays and Sunday. I had wanted him to tell me which week days that he was most willing to spare me not the obvious stuff. Then he said that he could give me more hours if I could close. I reminded him that the bus doesn't run that late. I ended up crying. I felt like he was blaming me for losing hours, my health insurance etc. I know that the most needed time is the evenings. If I had been able to close, I would probably be a supervisor by now. A new hire was told that if she learns photo, then she could help out by having a supervisor's key. This is the second person to get hired and promoted over my head. I have been there for over three years.
I mean I'm scared of driving and don't have the finances to buy a car, pay car insurance, pay car maintenance and whatever else there is like find a place to park. My landlord doesn't want tenants to park cars in the parking lot because that's for the businesses and the police don't want car on the side of the street over night. I HATE MY STUPID JOB.
I fantasized about either ripping my manager's head off or trying to get myself hit by a bus (obviously I will do neither). I haven't fantasized about hurting someone since my college days (early to mid nineties).

(((((((((((((((((((((((Hopeful)))))))))))))))))))))))) I am sorry about your tough situation at work. I don't have any good suggestions but wanted you to know I am here and I care.

BB

I'm sorry for your bad time at work.
Uhm, if you are deadly stuck, if your job is dead end, then you should be actively searching for a new one. I know it is quite difficult, but are you doing it? If the boss hates you then you could at least find a job where you can start over. If 3 years experience mean nothing to them then you would lose nothing.
Anyway, I think it is vital that you work on your relating skills. You say that you ended up crying, but that means you took what your boss said 100% emotionally and 0% rationally. So if you felt he was blaming you, maybe he was not after all.
When speaking to someone it is important to make sure that you hear and understand what they say, not hear the first words and jump to the conclusions that your mind suggests (and if you are depressive, we know what kind of conclusions they are).
I hope your therapy is aimed at this direction. I suggest that you get informed on the topic, there are many good books: if they don't solve the problem by themselves, they always help to use the t sessions better. This is what happens to me at least.
I really hope that these too many words of mine can deliver a drop of help :-)

The best of luck!